Cheap Solar Cell Panel Small Solar Panel

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China main port
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TT or LC
Min Order Qty:
50000 pc
Supply Capability:
15000 pc/month

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Product Description:

 

 

Specifications

1. monocrystalline silicon solar panel

2. high efficiency

3. 25 year module output warranty

Warranty:

1) 5 years for material & workmanship;

2) 12 years for 90% power output;

3) 25 years for 80% power output.

 

Packaging & Delivery

MOQ: 50pcs

Delivery Time: 10-20 days after order confirmation

Package: Wooden carton or pallet packing

ModelNBJ-025M
Max Power (W)25w
Optimum Power Voltage18.40V
Optimum Operating Current1.36A
Open Circuit Voltage22.53V
Short Circuit Current1.45A
Size645*290*25mm
Weight3.0KG
Cell quantity36 pcs

 

 

Solar cells and their teachnoleadges

The history of solar cell development is briefly outlined, and the properties of the sun and solar radiation are reviewed. Properties of semiconductor materials that are important in the design and operation of solar cells are reviewed. The physical mechanisms involved in the generation and recombination of excess carriers are discussed and the basic equations of device physics are given. Both the dark and illuminated properties of p-n junctions are analyzed. Energy conversion efficiency limits are discussed for the photovoltaic process as well as the effects of various nonidealities on efficiency. Techniques for measuring the efficiency of photovoltaic devices are also described. The standard technology for making silicon solar cells is reviewed, and improved silicon cell technology is discussed. Considerations relevant to the detailed design of silicon cells are discussed. Several alternative device concepts are outlined and the structure and properties of solar cells made on some of the more developed alternatives to single-crystal silicon are discussed. Concentrating systems and photovoltaic systems components and applications are described. The design of stand-alone, residential, and centralized photovoltaic power systems are discussed. 

Solar cells and their applications

Multiple solar cells in an integrated group, all oriented in one plane, constitute a solar photovoltaic panel or solar photovoltaic module. Photovoltaic modules often have a sheet of glass on the sun-facing side, allowing light to pass while protecting the semiconductor wafers. Solar cells are usually connected in series and parallel circuits or series in modules, creating an additive voltage. Connecting cells in parallel yields a higher current; however, problems such as shadow effects can shut down the weaker (less illuminated) parallel string (a number of series connected cells) causing substantial power loss and possible damage because of the reverse bias applied to the shadowed cells by their illuminated partners. Strings of series cells are usually handled independently and not connected in parallel, though as of 2014)individual power boxes are often supplied for each module, and are connected in parallel. Although modules can be interconnected to create an array with the desired peak DC voltage and loading current capacity, using independent MPPTs (maximum power point trackers) is preferable. Otherwise, shunt diodes can reduce shadowing power loss in arrays with series/parallel connected cells.

 

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Q:What is the right way to operate a solar cell?
To operate a solar cell system, the staff needs to have solid solar cell knowledge and operational experience.
Q:What can be used as the materials for solar cells?
Some kind of semi-conductor is one of the materials.
Q:What information can I get from the Internet about the solar cell modules? Such as what it is? How it is made?
A solar cell module has a chamber and includes a solar cell device, a gel /fluid, and a light-focusing unit. The solar cell modules are basically a group of solar cells used a specific function.
Q:Is that true that the price of solar cells will be reduced in the coming year?
It is very possibile that that solar cells' price will go down this year because there were many orders last year, either from European or China market. The solar cells are actually very sustainable. Once you buy it, you can use it for years. With the falling demand the price of course will go down.
Q:What is the solar cells market in China?
The solar cells industries has developed over the past 10 years, which means there are now a lot of competition in this industry. However, there are still some market margin because the solar cells industry needs better quality and high technology to be really good.
Q:How does the solar cell work properly?
When sunlight enters a certain structure, the photons provide the energy to activate the semicondcutore to generate power.
Q:I am a purchasing manager for a EPC engineering company, and we are planning to purchasing some 4bb solar cells for one of our project in Taiwan, can I get a quotation online?
We do have 4bb solar cells, but we also have 125Mono &156 Multi&Mono 2BB&3BB&4BB A grade solar cell.
Q:Where can I buy the 156x156mm high efficiency poly solar cells assembly?
156x156mm high efficiency poly solar cells assembly is usually very easy to get, all you need to do is to post your need online, and the suppliers will come to you.
Q:My solar cells are broken, can I just buy one and replace it?
No, you just can not do properly
Q:I would like to use a ppt to show how solar cells can work in a power generation factory, can anybody share some useful information with me?
I have a ppt which was for my presentation of solar cell research I did when I was in univeristy, I can share with you if you need it.
Our company is a High-tech enterprise, who is professional on manufacturing on solar photovoltaic products. We mainly produce the solar module and system. Our annual production capacity of solar module is 50MW.Meanwhile,we also undertake the design, installation and serviceonbothon-grid & off-grid system for home and power plant.

1. Manufacturer Overview

Location Zhejiang,China (Mainland)
Year Established 2006
Annual Output Value Above US$100 Million
Main Markets North America 2.90%
South America 25.60%
Eastern Europe 4.83%
Southeast Asia 9.18%
Africa 1.16%
Mid East 2.90%
Western Europe 19.81%
Central America 2.41%
Northern Europe 9.95%
Southern Europe 8.21%
South Asia 0.97%
Domestic Market 12.08%
Company Certifications ISO 9001:2008

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Rotterdam,Hamburg
Export Percentage 81% - 90%
No.of Employees in Trade Department 6-10 People
Language Spoken: English, Chinese, Japanese, German, French
b)Factory Information  
Factory Size: 3,000-5,000 square meters
No. of Production Lines 5
Contract Manufacturing OEM Service Offered Design Service Offered Buyer Label Offered
Product Price Range Low and/or Average